How much oil does an IS 300 take?
The Lexus IS 300’s 3.0-liter engine generally uses about 5.7 quarts (roughly 5.4 liters) of oil when you replace the oil filter, and about 5.0 quarts (around 4.7 liters) if you don’t replace the filter.
The exact amount can vary by model year and market, so it’s important to confirm with the vehicle’s manual or a trusted service source. Below is a detailed guide to the typical figures, how to verify the level, and best practices for maintaining the IS 300’s engine oil.
Engine and capacity basics
The IS 300 sold in the United States and many other markets uses the 2JZ-GE inline-6 engine configured for a 3.0-liter displacement. The oil capacity figures you’ll see in manuals are usually given as a “with filter” amount and a separate “without filter” amount. Use the higher value when you’re installing a new filter, and the lower value when topping up after an oil drain where the filter is not being replaced.
Below are the typical capacities you’ll encounter in manuals and service guides. Use these as a baseline, but always verify on your own car because variations exist.
- With oil filter: approximately 5.7 quarts (5.4 liters)
- Without oil filter: approximately 5.0 quarts (4.7 liters)
- Note: Some sources list a range around 5.3–5.8 quarts depending on exact sump and filter configuration
These figures provide a baseline for planning oil changes; confirm the actual level on the dipstick after filling and letting the engine settle.
How to verify the right amount
To ensure you add the correct amount of oil, follow these steps to check the level accurately:
- Run the engine until it reaches operating temperature, then turn it off and wait a few minutes for the oil to settle.
- Use the dipstick to check the current oil level and note the target full mark.
- Add oil in small increments (about a quarter to a half quart at a time), rechecking with the dipstick after each addition.
- When the dipstick shows the level near the full line, stop adding and recheck again after a few minutes to ensure a stable reading.
- Avoid overfilling, as too much oil can cause foaming and engine damage.
Once the level is at the full mark on the dipstick, you’re done. If you’re very close but not yet on the full line, add a little more and recheck.
Oil type and viscosity
The IS 300 generally uses a 5W-30 oil as the standard specification, with full-synthetic or synthetic-blend options common among owners. In some climates or with different service intervals, a 5W-30 or 10W-30 grade may be recommended by Toyota/Lexus, while certain markets may accept other API-certified oils. Always consult the owner’s manual or the under-hood oil specification sticker for the exact grade and approvals required for your vehicle.
Model-year variations to note
The IS 300 badge refers to the early 2000s IS lineup that used the 2JZ-GE engine, primarily in 2001–2005 U.S. models. Later IS models shifted to different engines and naming (for example, IS 250/IS 350 in mid-2000s markets). If you own a non-U.S. variant or a later model that’s been imported, verify the engine displacement and capacity from the manual or a Lexus service bulletin, as capacities can differ with engine design and sump size.
Tips for DIY oil changes
DIY oil changes are common, but accuracy matters. Consider these practical tips:
- Prepare the right filter and oil type before starting; having everything on hand prevents partial fills or rework.
- Dispose of used oil properly at a recycling center or an auto parts store that accepts used oil.
- Use a clean, calibrated funnel to minimize spills and keep the fill area tidy.
- After an oil change, run the engine briefly, then recheck the dipstick once the oil has settled.
By following these practices, you’ll maintain proper lubrication and reduce the risk of under- or over-filling after a change.
Bottom line
For the IS 300 with the 2JZ-GE engine, plan for about 5.7 quarts of oil when replacing the filter, and about 5.0 quarts when not replacing the filter. Confirm the exact figure for your car by checking the owner’s manual and measuring with the dipstick after filling. Use 5W-30 (synthetic or synthetic-blend) as a starting point, but always adhere to the grade specified by Lexus for your environment.
Summary
The IS 300’s oil capacity centers around roughly 5.7 quarts with a new filter and about 5.0 quarts without, with variations by year and market. Always verify with the manual, use the dipstick to confirm full level, and follow the recommended oil grade (commonly 5W-30) for your climate. Properly maintaining oil quantity protects the engine’s longevity and performance.
